TLS Online TPP Program

#Question id: 142


Histidine has pKa values of 1.8, 6.0 (R-group) and 9.3 . At pH 8.0, the net charge on histidine is

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. positive.

  2. negative.

  3. neutral (uncharged). 

  4. insufficient information to tell.